SKU / class
SKU / class
ZT-ROOF-TR4-S trapezoidal former
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Process Library · Roofing & Wall Panel
Trapezoidal Roof Sheet Forming
TN40 high-speed trapezoidal single-skin roof line uses cast-iron stands, 25 passes and stop-cut shear running 35-40 m/min with accurate length control, one of the most widely used metal roof profiles.
What this process looks like
Trapezoidal is the workhorse single-skin roof profile. Coverage differs from coil width — two boards share one rib-pitch family.
Host
Host
18–22 stands · shaft Ø80 · 45# chrome rolls · chain drive
Cut / speed
Cut / speed
hydraulic guide-pillar stop-cut · 12–15 m/min
Specifications
| SKU / class | ZT-ROOF-TR4-S trapezoidal former |
|---|---|
| Host | 18–22 stands · shaft Ø80 · 45# chrome rolls · chain drive |
| Cut / speed | hydraulic guide-pillar stop-cut · 12–15 m/min |
| Power | main 5.5–7.5 kW |
| Controls | PLC + HMI in Spanish / English / Chinese |
| Material | PPGI/PPGL 0.3–0.6 mm · coil 1200/1220 mm |
| Profile | TR4 · cover 1000 mm on the published 1200 mm board |
| Aux | 5 T decoiler + 3 m table (curving optional) |
Operation steps
Decoil.
Decoil.
5 T decoiler feeds the strip. Match inner diameter 450–550 mm.
Hang the TR4 board.
Hang the TR4 board.
Operator sees coil width vs 1000 mm cover before the first-off.
Progressive 4-rib forming.
Progressive 4-rib forming.
18–22 stands form four major ribs; pans carry small stiffeners.
Hydraulic stop-cut.
Hydraulic stop-cut.
Strip stops in the shear; GCr12 blade matches the TR4 section.
Overlap check
Overlap check
Two panels on the table — side lap must seat.
Outfeed.
Outfeed.
3 m table; stacker and curving only if the order includes them.
What's included
This line
High-speed trapezoidal single-skinroof sheet forming (TN40 class): twin 1000/1250 specification, stop-cut line with decoiler + table + flip stacker.
Standard build
Cast-iron stands, 25-pass forming, guide-pillar stop-cut with accumulator, Delta PLC/HMI in ZH/local/EN, and 12 m flip stacker.
Key details
Line speed
Line speed is high, but the knife recipe is stop-cut. Confirm the shear type matches the specification before quoting cycle time.
Note 2
A 1250 mm coil does not mean 1250 mm coverage. show the 975 / 780 boards next to the first-off panel.
FAQ
Q: Can this line run TR5 on the same rolls?
A: No. TR5 is a different roll set. Dual-layer or a second host is a separate quote.
Q: Is 30 m/min standard?
A: No. S-class is 12–15 m/min. 30 m/min is gearbox H-class.
Q: Is curving included?
A: Not on the standard host. Electric or hydraulic curving is optional.
Get a configured quote
Send us your profile sizes, gauge and daily output — we return a sized proposal with lead time.
Request a quote